Hranidbena i mesna svojstva mladih svinja različitog intenziteta formiranja u ranoj ontogenezi i unutarpasminske diferencijacije prema genu za melanokortin 4 (Mc4r) receptor

The aim of this study was to investigate young pig fattening and meat quality due to the varying formation intensities in early on- togenesis and two genotypes based on the mel- anocortin receptor 4 (Mc4r) gene. To calculate the correlations between traits and the econom- ic efficiency of using animals of experimental groups in industrial complex conditions, the assessment of animals for fattening and meat quality examined the following characteris- tics: average daily live weight gain during the control fattening period in grams; age of reaching 100 kg live weight in days, chilled car- cass length in centimetres; length of the bacon half of the cooled carcass in centimetres; lard thickness at the thoracic vertebrae T6-T7 in millimetres. Further, the biometric processing of research results and calculation of the eco- nomic efficiency was performed. Young pigs of the controlled population met the requirements of the 1st class and the elite class for fattening and meat qualities. In examining the interbreed differentiation of large white breed animals, the melanocortin 4 receptor (Mc4r) gene deter- mined that the Mc4rAG genotype outperformed the Mc4r AA genotype for average daily live weight gain, age at live weight of 100 kg, lard thickness at T6-T7, and chilled carcass length by an average of 4.50%. The difference between groups for the Tyler B\u27s index was 11.82 points, and according to the average daily increase in live weight, the disparity between young pigs of interbreed differentiation according to the formation intensity index was 4.69%, the age of reaching 100 kg live weight was 3.10%, and the chilled carcass length was 1.23%. The num- ber of reliable connections between fattening and meat qualities, and the formation inten- sity and Tyler B indices was 75.0%, indicating their promise for use in selection and breeding work. The maximum increase in additional production was obtained from young pigs of the Mc4r AG genotype (+2.71%) and of group I, in which the formation intensity index ranged from 0.935 to 1.087 points (+2.65%).Cilj je ovog rada bio istražiti tovne i mesne kvalitete mladih svinja različitog intenziteta formiranja u ranoj ontogenezi i različitih genotipova prema genu za melanokortin receptor 4 (Mc4r); izračunati razinu korelacije između svojstava, kao i ekonomsku učinkovitost korištenja životinja pokusnih skupina u uvjetima industrijskog kompleksa. Ocjenjivanje životinja za tov i kvaliteta mesa provedeni su uzimajući u obzir sljedeće značajnosti: prosječni dnevni prirast žive vage u razdoblju kontrolnog tova, g; dob dostizanja 100 kg žive vage, broju dana, duljina ohlađenog trupa u cm; duljina polovice slanine ohlađenog trupa u cm; debljina slanine na razini 6-7 torakalnih kralježaka u mm. Biometrijska obrada rezultata istraživanja i izračun ekonomske učinkovitosti rezultata istraživanja provedeni su prema općeprihvaćenim metodama. Utvrđeno je da mlade svinje kontrolirane populacije u tovu i kvaliteti mesa zadovoljavaju uvjete I. klase i elitnog razreda. Uzimajući u obzir unutarpasminsku diferencijaciju velikih bijelih pasmina, genom za melanokortin 4 receptor (Mc4r) utvrđeno je sljedeće: mlade svinje genotipa Mc4r AG nadmašuju vršnjake genotipa Mc4r AA po prosječnom dnevnom prirastu žive vage, dobi u kojoj je živa vaga 100 kg, debljini sala na razini 6-7 torakalnih kralješaka i duljini ohlađenog trupa za prosjek od 4,50 %. Razlika između skupina prema indeksu Tylera B. iznosi 11,82 boda (td=3,70;P<0,01). Prema prosječnom dnevnom prirastu žive mase, razlika između mladih svinja različite unutarpasminske diferencijacije prema indeksu “intenzitet formiranja” je 4,69 %, dob dostizanja 100 kg žive vage je 3,10 %, a duljina ohlađenog trupa iznosi 1,23 %. Broj pouzdanih veza između tovnih i mesnih kvaliteta, kao i indeksa „intenzitet formiranja“ i Tyler B. iznosi 75,0 %, što ukazuje na njihovu primjenu u selekcijsko-oplodnom radu. Najveće povećanje dodatnog uzgoja ostvareno je kod mladih svinja genotipa Mc4r AG (+2,71 %) i životinja I. skupine, kod kojih se indeks “intenziteta formiranja” kreće od 0,935 do 1,087 bodova (+2,65 %)

Examining the Fundamental Elements of Physical and Health-Enhancing Educational Activity of Student in Distance Learning

This study illustrates the notion of physical and health-enhancing educational activity in distance learning processes as a particular kind of helpful activity on understanding the physical and health-enhancing knowledge. Based on analysing the psychological and pedagogical literature, 4 structural elements of student youth's physical and health-enhancing educational activity have been designated following distance learning processes: reϔ e iveǦsubjectiveǡ target, motivational, as well as activity-creative elements. Based on the data obtained, the motivational element indicates the motives system prompting them to physical education (PE) and makes the necessary for such classes in circumstances of remote education over the course of quarantine. The target element indicates goal setting, its details, and tasks intended to master the system of physical culture and health-enhancing knowledge, abilities, and skills. The activity-creative element reveals the system of skills as a collection of techniques to carry out physical activities at home, applying digital didactic materials. Moreover, the reϔ e iveǦsubjective element demonstrates the capacity of students to handle their internal world, obey healthy lifestyle rules, especially during quarantine, develop emotional maturity, get the most out of their potential, invoke a sense of concentration, se fǦconϔidenceǡ strength, movement

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Measurement of the W±Z boson pair-production cross section in pp collisions at √s=13TeV with the ATLAS detector

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Measurement of the View the tt production cross-section using eμ events with b-tagged jets in pp collisions at √s = 13 TeV with the ATLAS detector

This paper describes a measurement of the inclusive top quark pair production cross-section (σtt¯) with a data sample of 3.2 fb−1 of proton–proton collisions at a centre-of-mass energy of √s = 13 TeV, collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron–muon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b-tagged jets are counted and used to determine simultaneously σtt¯ and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be: σtt¯ = 818 ± 8 (stat) ± 27 (syst) ± 19 (lumi) ± 12 (beam) pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented

Search for the direct production of charginos and neutralinos in final states with tau leptons in √s=13 TeV collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with at least two hadronically decaying tau leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 36.1 fb−1, recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13TeV.Nosignificant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of ˜χ+1 ˜χ−1 pair production and of ˜χ±1 ˜χ02 and ˜χ+1 ˜χ−1 production in simplified models where the neutralinos and charginos decay solely via intermediate left-handed staus and tau sneutrinos, and the mass of the ˜ τL state is set to be halfway between the masses of the ˜χ±1 and the ˜χ01. Chargino masses up to 630 GeV are excluded at 95% confidence level in the scenario of direct production of ˜χ+1 ˜χ−1 for a massless ˜χ01. Common ˜χ±1 and ˜χ02 masses up to 760 GeV are excluded in the case of production of ˜χ±1 ˜χ02 and ˜χ+1 ˜χ−1 assuming a massless ˜χ01. Exclusion limits for additional benchmark scenarios with large and small mass-splitting between the ˜χ±1 and the ˜χ01 are also studied by varying the ˜ τL mass between the masses of the ˜χ±1 and the ˜χ01

Top-quark mass measurement in the all-hadronic tt¯ decay channel at √s=8 TeV with the ATLAS detector

The top-quark mass is measured in the all-hadronic top-antitop quark decay channel using proton-proton collisions at a centre-of-mass energy of √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. The data set used in the analysis corresponds to an integrated luminosity of 20.2 fb−1. The large multi-jet background is modelled using a data-driven method. The top-quark mass is obtained from template fits to the ratio of the three-jet to the dijet mass. The three-jet mass is obtained from the three jets assigned to the top quark decay. From these three jets the dijet mass is obtained using the two jets assigned to the W boson decay. The top-quark mass is measured to be 173.72 ± 0.55 (stat.) ± 1.01 (syst.) GeV

Muon reconstruction performance of the ATLAS detector in proton–proton collision data at √s = 13 TeV

This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at √s = 13 TeV in 2015. Using a large sample of J/ψ→μμ and Z→μμ decays from 3.2 fb−1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99% over most of the covered phase space (|η| 2.2, the pT resolution for muons from Z→μμ decays is 2.9 % while the precision of the momentum scale for low-pT muons from J/ψ→μμ decays is about 0.2%

Search for TeV-scale gravity signatures in high-mass final states with leptons and jets with the ATLAS detector at sqrt [ s ] = 13TeV

A search for physics beyond the Standard Model, in final states with at least one high transverse momentum charged lepton (electron or muon) and two additional high transverse momentum leptons or jets, is performed using 3.2 fb−1 of proton–proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015 at √s = 13 TeV. The upper end of the distribution of the scalar sum of the transverse momenta of leptons and jets is sensitive to the production of high-mass objects. No excess of events beyond Standard Model predictions is observed. Exclusion limits are set for models of microscopic black holes with two to six extra dimensions